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vent stack fire

vent stack fire

vent stack fire

(OP)
Has anyone experienced vent stack fires at offshore platforms during thunderstorms????
My case is with around 0.5 MMscfd discharge through the vent to atmosphere- the source being mostly purge gas & leak from compressor seals.
What is the solution to prevent such fires??

RE: vent stack fire

A flame arrestor?

<<A good friend will bail you out of jail, but a true friend
will be sitting beside you saying " Damn that was fun!" - Unknown>>

RE: vent stack fire

Perhaps one solution could be to vent to the flare.

RE: vent stack fire

Wish I had that problem.

**********************
"Pumping systems account for nearly 20% of the world's energy used by electric motors and 25% to 50% of the total electrical energy usage in certain industrial facilities." - DOE statistic  (Note: Make that 99.99% for pipeline companies) http://virtualpipeline.spaces.live.com/

RE: vent stack fire

(OP)
Gents, Thanks for the replies.

The problems faced by me against the solutions-
Flame arrestor gets clogged over a period of time. Again how do we maitain the flame arrestor on a 200 feet vent stack of 8" diameter pipe??

The pressure from the compressor seals is too low & hence the same is vented to atmosphere, hence flaring is not an option.

Do we have anything else??

RE: vent stack fire

A scrubber maybe?
If your problem is that the gases at the vent stack ignite during a storm, you need to prevent them from getting them.
Depending what they are, you can scrub them prior to venting or maybe enev consider recompressing the gases with a vapour recovery system

<<A good friend will bail you out of jail, but a true friend
will be sitting beside you saying " Damn that was fun!" - Unknown>>

RE: vent stack fire


 Use a water ejector at top of vent to induce the flow  of gases and the resultant intermingling of gas and water mitigates against ignition.

Offshore Engineering&Design

RE: vent stack fire

you may want to consider CO2 flood.  We put a stack of CO2 bottles linked to vent in case of thunderstorm igition.  Vent snuffer package.

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